TMZ: Brendan Dassey moved from one Wisconsin prison to another

Brendan Dassey has been quietly moved from one prison to another.

TMZ has learned Dassey -- the younger subject of Netflix's "Making A Murderer" -- was transferred Wednesday, January 20th from Green Bay Correctional Institution to Columbia Correctional Institution, a Wisconsin maximum security prison about 225 miles away.

A spokesperson for the Wisconsin Department of Corrections tells TMZ inmate transfers are common -- but wouldn't elaborate.

Sources close to Dassey tell TMZ the move was for several reasons -- one of which related to the convict becoming so high profile as a result of "Making A Murderer."

CLICK HERE to access the "Avery Archive" at